Title :
Contrasting Orthogonal and Non-orthogonal Space-Time Schemes for Perfectly-Known and Estimated MIMO Channels
Author :
Khalighi, Mohammad-Ali ; Helard, Jean-Franqois ; Bourennane, Salah
Author_Institution :
Inst. Fresnel, UMS CNRS, Marseille
Abstract :
We consider the space-time coding issue in MIMO structures and compare the two potential choices of orthogonal and non-orthogonal schemes with a simple iterative detector for the latter case. We show that the choice of non-orthogonal schemes is quite rational and justified, regarding the substantial gain that we can obtain, compared to orthogonal coding. Two cases of perfectly-known channel at receiver and pilot-only-based channel estimation are studied
Keywords :
MIMO communication; channel estimation; orthogonal codes; space-time codes; MIMO channels estimation; space-time coding; Channel coding; Constellation diagram; Detectors; Diversity methods; Downlink; Interference; Iterative decoding; MIMO; Receiving antennas; Transmitting antennas;
Conference_Titel :
Communication systems, 2006. ICCS 2006. 10th IEEE Singapore International Conference on
Conference_Location :
Singapore
Print_ISBN :
1-4244-0411-8
Electronic_ISBN :
1-4244-0411-8
DOI :
10.1109/ICCS.2006.301365